The infection bleeds Huang Dan is the end helicoid causes by hemorrhagic Huang Dangou, mainly encroaches upon the young 传染性出血黄疸是由出血性黄疸钩端螺旋体引起的，主要侵犯幼犬。
To the dog pathogenesis is the hemorrhagic yellow helicoid and the dog hook end helicoid two blood serums.对狗致病的是出血性黄疸螺旋体和犬钩端螺旋体两个血清型。